SOLUTIONS

BCE Dust Collector, Baghouse and Pollution Control Solutions

BCE will engineer the ideal solution for your material and processing requirements from baghouses, to filter bags, to complete dust collection systems.  

BCE engineers will design the optimum dust collection and pollution control solution to minimize the cost of material and product recovery from your processes.  BCE strives to create dust collector systems which make material recovery a simple and easy task.

Browse our site to learn more about how BCE can create your ideal pollution control solution, so you can provide the cleanest air and environment as possible. 

• Asphalt
• Carbon Black
• Coal
• Compressed Air
• Food Processing
• Gaskets
• Gypsum
• Lime
• Particulates
• Wood Working

Be sure to take advantage of our online form, so we can provide you with details on how BCE can design and install the right solution for you.

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Equipment

Dust Collector, Baghouse, and 

Pollution Control Equipment Engineering

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4/22 - BCE Air Pollution Control Systems

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BCE offers equipment for stand alone and turnkey systems.  BCE's staff will design, fabricate, install, and maintain your equipment with a cutting edge approach to pollution control and air filtration systems.  

We offer an array of dust collection systems and we are fully capable of designing and engineering the ideal solution for your industrial or commercial applications.  Please browse our site to learn more about our engineering and manufacturing services, or contact us using our online form, by phone or by e-mail and we can help you with your pollution control needs today!

• ASME Code Vessels
• Coal-Fired Boilers
• Control Systems
• Dust Collectors
• Electrostatic Precipitators
• Filter Bags
• Industrial Ductwork
• Industrial Ventilation
• Odor Control Systems
• Pleated Filters
• Thermal Oxidizers
• Wet Scrubbers

BCE is proud to offer solutions for standard and custom configurations.    

We look forward to hearing from you, and we look forward to solving your pollution control challenges.

Get started with BCE

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Wet Scrubber Engineering

A wet scrubber is an air cleaning device where a dust-laden air stream is brought into contact with a scrubbing liquid (generally water) and the fine particulates are captured by the liquid droplets and, hence, removed from the air.  Dirty water exits the device, but the cleaned air will still retain a fine mist.  Therefore, it is necessary for a wet scrubber to have a second stage, called a mist eliminator, to remove these fine droplets.  Wet scrubbers can also be used to absorb noxious constituents from the gas, but the design criteria for gas absorption can be quite different from that for particulate removal.

BCE Low energy scrubbers are used to collect particles greater than 5 microns.  An example of this type is a spray tower.  This is a cylindrical vessel fitted with rows of water pipes to spray down on rising inlet air.  To prevent droplets from being entrained with the rising air stream, the droplet size must be relatively large (500-1000 microns) compared to high-energy scrubbers and the air velocity must be low (1-4 ft/sec).  The larger droplets reduce efficiency and the low air velocity makes this type scrubber larger than others at the same air volume.  Other types of low-energy scrubbers are orifice scrubbers and dynamic wet precipitators.

BCE High-energy wet scrubbers are used to collect submicron particles.  Two common designs of high-energy wet scrubbers are the venturi scrubber and the packed tower, both designed to provide effective contact of water droplets with the dust-laden inlet air.

The BCE Venturi Scrubber, as the name implies, contains a converging section, throat and diverging section.  Dust-laden air enters at the top of the converging section and the scrubbing liquid is injected either at the entrance of the converging section or at the throat.  As a result of the area reduction from the venturi entrance to the throat, the air reaches a high velocity where it strips the water from the scrubber wall, forming countless numbers of very small droplets, which capture the particles in the venturi throat.  The mist eliminator of a BCE Venturi Scrubber is usually a cyclonic separator directly coupled to the scrubber.

The packed tower consists of a single cylindrical vessel where the inlet air and water contact each other countercurrently in a packed bed and the mist eliminator is in the top of the vessel to remove the fine droplets before the cleaned air exits through the top outlet.  Packed beds are commonly used in a variety of applications where a large area of contact is necessary to promote intimate contact between gas and liquid phases.

The following are some advantages and uses of BCE Wet Scrubbers:

• Can handle high-temperature gas streams
• Low initial cost
• Small space to install
• Separates explosive solids from gas streams
• Reduces temperature of exhaust stream
• Capable of high collection efficiency

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Thermal Oxidizer Engineering 

BCE thermal oxidizers are necessary when the processed air contains small, combustible particulates.  The idea of using a thermal oxidizer is to reduce toxic, explosive, or otherwise dangerous, pollutants to simpler, non-toxic substances by subjecting the pollutants to very high temperatures where the chemical bonds are broken.  The decomposed material may then be released safely to the atmosphere.  BCE prides itself on creating optimum clean air solutions for you and your project.

BCE thermal oxidizers may be classified as follows:

• RegenerativeIn a regenerative thermal oxidizer (RTO), energy used in the oxidation process is recovered very efficiently by ceramic heat transfer beds coupled to the oxidation chamber.  Thermal efficiency can be around 95% for this type of oxidizer.  A disadvantage is the expense of replacing the ceramic media in case of plugging.  Also RTO's often run at higher pressure drops than recuperative oxidizers.
   
• RecuperativeIn a recuperative thermal oxidizer, heat from oxidation is passed through a heat exchanger which in turn heats the inlet air.  Energy recovery for this type is roughly 70%.  Although the recuperative oxidizer costs less, the energy usage can be about six times that of an RTO, offsetting the savings over the long term.
   
• CatalyticA catalytic recuperative thermal oxidizer uses a catalyst such as platinum or rhodium to allow decomposition at a much lower temperature, bringing the operating temperature of the unit down from 1400°F to about 650°F.  This reduces the fuel usage to about a quarter of the recuperative thermal oxidizer, but is still higher than that for the RTO.

BCE is ready to discuss your application with you.  We will provide initial and operating cost estimates for the different types of thermal oxidizers so you can be sure you are getting the right oxidizer for your specific needs.

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Pleated Filters for Dust Collector Applications

The BCE pleated filter element used by BCE is nominally 6" outside diameter, fits into the same tube sheet as a bag, and consists of a filter medium folded into numerous pleats around a central perforated core.  Pleated filters can be either top or bottom removal, and, like bag filters, are cleaned by reverse pulse jet.  Depending on the pleat spacing, a 36" long pleated filter can have two to four times the filter area as an 8-foot long bag!

A BCE dust collector fitted with pleated elements offers a number of advantages over conventional filter bags.

• Due to the large increase in filter area per element volume, the housing of a pleated filter is smaller, in spite of its lower operating air-to-cloth ratio.
• Whereas a pleated element filters dust on its surface, rather than in depth, as with a conventional filter bag, it is easier to clean and operates at a lower pressure drop than a bag.
• Dust penetration through a pleated element is far less than through a typical filter bag.
• Less dust is deposited on adjacent bags during a cleaning pulse, since reverse air flows normal to the pleats, not radially.

Since BCE pleated filters fit on the same tube sheet as top or bottom removal filter bags, it is possible to retrofit pleated elements to replace bags on an existing dust collector.  This filter replacement can be considered when a bag filter runs at too high of a pressure drop, when bag blinding occurs or when process changes require the filter to handle more air volume than for which it was originally designed.  Whereas pleated elements usually require more cleaning air than do bags, an analysis of the existing filter's pulse system must be undertaken first, since the valve size, blowpipe orifices and venturis all affect the pulse cleaning efficiency.  BCE will be happy to have one of our filtration experts help you determine whether a non-performing bag filter can be remedied by a pleated filter retrofit.

BCE pleated filters have some limitations.  They should be avoided for dusts that pack or agglomerate and high-temperature elements can be quite expensive.  There is also a more limited choice of filter materials than with bags.  Typical pleated material is spun-bond polyester. Nomex and Ryton (PPS), for applications to 375°F, is available, as are special surfaces, such as PTFE membranes and oleophobic finishes for sticky or oily materials.

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Odor Control Systems

Odor Control System

BCE designs and implements a variety of odor control systems including activated carbon adsorbers, wet chemical scrubbers, dry chemical scrubbers, and bio-filters.   BCE know's how important it is to install the appropriate system in order to provide clients with the most optimum performance and reliability, for the best value.  Continue reading for further information on BCE odor control systems.

An odor control system is a generic term used to describe a type of equipment designed to scrub malodorous gases in the vapor phase or add chemical additives to the liquid phase to prevent noxious gases from forming.  In wastewater treatment, odor control is a primary consideration.  Microbes in sewage can produce hydrogen sulfide, notorious for its "rotten egg" smell, which can be detected by the human nose in concentrations as low as 0.1 parts per billion.

In vapor phase odor control, the principal objective is the removal of hydrogen sulfide.  Some examples are:

• Activated carbon adsorbers
  In these, the air is passed through a bed of porous, granulated, activated carbon.  Odorous compounds in the air are neutralized when they adhere to the carbon granules.  Spent carbon can be reactivated.  These adsorbers are effective for removing sulfur-based compounds, including hydrogen sulfide, as well as VOC's.
   
• Wet chemical scrubbers
  These are multi-stage packed towers which work in a similar way to packed tower wet scrubber type dust collectors.  The packing provides for intimate contact between the scrubbing solution and malodorous air.  These type scrubbers are effective removing hydrogen sulfide, ammonia and various organic odors.
   
• Dry chemical scrubbers
  In these scrubbers, a medium containing particular chemical compounds (typically KMnO4 or iron oxide) is used.  Sulfurous compounds in the air react with these chemicals and are converted to agreeable substances.  The disadvantage with a dry scrubber is that the chemicals are consumed and therefore need to be replaced, usually limiting economical operation to air with low concentrations of sulfur-based compounds.
   
• Bio-filters
  Bio-filters use microorganisms which feed on organic materials and oxidize sulfur.  When operated at the correct temperature and humidity for a particular loading, they are effective at removing sulfur-based compounds and mercaptans.

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Industrial Ventilation

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11/21 - BCE Commercial Ventilation Systems

Our industrial ventilation systems are designed, fabricated, and installed by our expert engineers and technicians.  We work with you to create the optimum solution for your needs.  Whether it's installing ventilation for industrial processes, laboratories, or commercial kitchens, BCE is your best bet!

BCE is proud to provide our clients with the best technology and services available.  We also strive to save you money by completing projects on time and under budget.  Take a look at our image galleries to see some examples from a few of our projects.

ENERGY EFFICIENCY

BCE commercial ventilation systems can use heat reclaimed from the air being extracted to heat the incoming clean air.  This can reduce the load on the air conditioning system, saving you on energy costs.

INTEGRATION

BCE systems integrate:

• Ventilation
• Fire Supression
• Filtration
• Air processing
• Heat Recovery

Let BCE engineers design and install the right solution for your system.  Our engineers have extensive experience with designing according to a variety of codes.  We can custom design any system to your requirements in even the most demanding environments, such as those found in the petrochemical industry.  Call us and we'll get started in making your project a reality.

Get started with BCE

Toll Free: (866) 936-4286
Fax: (815) 556-8076
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